Will and Rachael volunteer at the world's largest sanctuary for orphaned rhinos; Cornish vet Emily attempts a life-threatening giraffe relocation and three warthogs run Emma ragged.

Emily goes on a challenging cheetah collaring expedition in the bush; Emma becomes a surrogate mom to a three-week-old baby hippo named Hector.

Emma is faced with an emergency patient; Emily has a hard decision to make when a cape buffalo is seriously injured; Anna hopes to help dehorn five white rhinos to make them less valuable to poachers.

An aardvark demands five-hour walks every night; a vervet monkey is rushed in after being run over.

Harriet is called out to an elephant who has been caught in a snare; Debbie is put to the test as nine orphaned baby monkeys arrive at Riverside Rehabilitation Centre.

Emily carries out the risky procedure of anesthetizing a cheetah; Debbie is put to the test when nine orphaned baby monkeys arrive at once.